Waterproofing receiver

ABSTRACT

A receiver for use in fastening membranes of waterproofing material to a concrete wall structure so as to tightly secure the upper edge of the membranes and thereby prevent the upper edge from peeling away from the wall and sagging of the membranes. The receiver is in the form of an elongated member which is fastened to the inside of the concrete forms prior to pouring of the concrete, the receiver extending along the length of the forms at grade level. The elongated member is concave in cross-section so as to form a hollow central portion which is exposed in the wall after the forms are removed, the receiver being contained within the poured wall. The concave shape is defined by a pair of leg sections with a tongue element projecting from between the leg sections and biased towards the lower of the leg sections so that the upper edges of the waterproofing members or membranes are clamped between the tongue element and the lower leg section prior to adhering the membranes to the wall surface below the receiver.

[ Feb. 26, 1974 Primary Examiner-John Murtagh Attorney, Agent, or Firm-Weir, Marshall, MacRae & Lamb [57] ABSTRACT A receiver for use in fastening membranes of waterproofing material to a concrete wall structure so as to tightly secure the upper edge of the membranes and thereby prevent the upper edge from peeling away from' the wall and sagging of the membranes. The receiver is in the form of an-elongated member which is fastened to the inside of the concrete forms prior to pouring of the concrete, .the receiver extending along the length of the forms at grade'level. The elongated member is concave in cross-section so as to form a hollow central portion which is exposed in the wall after the forms are removed, the receiver being con tained within the poured wall. The concave shape is WATERPROOFING RECEIVER Charles A. Annand, PO. Box 366, Truro, Nova Scotia, Canada June 14, 1972 [21] Appl. No.: 262,853

Foreign Application Priority Data Sept. 23, 1971 Canada...........'. 123534 Int. E04d 3/36 Field of Search.......................... 52/58-62, 701

References Cited UNITED STATES PATENTS United States Patent [1 1 Annand [76] Inventor:

[22] Filed:

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During construction of concrete walls for buildings waterproofing is applied to the portion of concrete wall structures which will be located below ground level, the waterproofing being carried out prior to grading around the structure. One form of waterproofing which is commonly used is an asphalt compound which is brushed or sprayed onto the exterior walls. Another form of waterproofing, which is more effective but expensive, has come into common use, particularly in commercial buildings. A sheet or membrane type of material is secured to the outer surface of the wall, the material being either a waterproof material, which may be about 1/8 inch thick and is fixed to the wall with an adhesive, or alternatively, a fiberglass cloth is secured against the wall with an asphalt compound. The sheets of material are usually provided in long narrow pieces, which may be supplied in rolls, and the sheets are normally applied to the wall in the up and down direction.

With the known methods of applying the membranes of waterproofing material to the concrete walls, the upper edge of the membranes is free to peel away from the .wall so that water and dirt may become lodged between the membrane and the concrete wall. Moreover, due to the weight of themembrane material, there is a tendency for it to sag so that pockets are formed between the waterproofing membrane and the concrete wall. As moisture becomes trapped in the pockets, gradual failure of the waterproofing occurs.

The receiver of the present invention, which overcomes the above disadvantages, includes an elongated member having a concave shape in cross-section so as to provide a hollow central portion, the concave shape being defined by a pair of leg sections. Within the hollow central portion, the-elongated member is provided with a tongue element projecting from between the leg sections and biased towards one of the leg sections for clamping the membrane against the one leg section.

In use the receiver is secured to the concrete wall form with the concave section against the form and extending along the length of the forms at the grade level prior to pouring the concrete. Thus, after the concrete has been poured and the forms removed, the receiver is contained within the concrete wall with the concave central portion opening outwardly of the wall at grade level. The upper edges of the waterproofing membrane are then placed between the tongue element and the lower leg section so as to be clamped to the receiver, and an adhesive is applied to the wall prior to smoothing the membrane onto the wall from the receiver downward. The upper edge is thus tightly secured to the wall and the weight of the membrane may be partially carried by the receiver so as to prevent peeling and sagging as occurs with known methods of applying the membranes.

Subsequent to the installation of the membranes the hollow central portion may be. filled with a plastic cement compound or asimilar material to further seal the upper edge of the membrane and prevent any external damage to the receiver.

The leg sections of the receiver preferably diverge outwardly and terminate in outer flanges which define front faces in a common vertical plane. The front faces are pressed flatly against the inside of the concrete forms when the receiver is secured to the forms and after pouring of the concrete and removal of the forms the front faces are substantially flush with the outer surface of the concrete wall.

A strip of removable sealing tape may be adhered to the front faces of the receiver as originally provided so as to span the concave central section and thereby close the hollow interior thereof until after the forms have been removed subsequent to pouring. The interior of the receiver may thereby be kept clean prior to the installation of the membranes. I

Other features of the present invention will become apparent from the following description and with reference to the accompanying drawings in which FIG. 1 is a perspective sectional view through a foundation and floor structure of a building and showing the waterproofing receiver of the present invention in an installed state in various locations;

FIG. 2 is an enlarged sectional view of the waterproofing receiver within apoured wall and showing the relationship thereof the wall form;

FIG. 3 is a view similar to FIG. 2, but prepared for the reception of the waterproofing membrane;

FIG. 4 is a view similar to FIGS. 2 and3 but showing the state of the waterproofing receiver after completion of the installation of waterproofing membrane'and the grading around the wallstructure;

FIG. 5 is a view corresponding to FIG. 2 and showing an alternative embodiment of the invention; and

FIG. 6 is a view similar to FIG. 5 and illustrating an alternative use of the embodiment of FIG. 5.

In FIG. 1, the reference numeral 10 denotes the waterproofing receiver of the present invention, the receiver being cast within a'concrete wall 11 which is part of a building structure l6..ln the arrangement shown, a pair of vertically spaced receivers 10 extend horizontally about the periphery of wall 1 I which is in the form of a foundation and against which earth or fill 18 is graded. The pair of receivers 10 are substantially flush with an exterior surface 12 of the wall 11. Yet another receiver 10 is provided on theinten'or surface 13 of the wall at a level about equal to or slightly belowinterior floor 14. Each of the receivers 10 hold waterproofing membranes 15 which are provided to prevent moisture from penetrating the wall 11 and floor 14 from outside the building structure 16 to the interior thereof.

In the building structure 16, the concrete wall 11 is poured in suitable forms (not shown in FIG. 1) on top of a concrete footing 17, which extends around the petiphery of the building structure in the conventional manner. In the interior of the building a concrete subfloor 20 is poured on top of suitable course fill 21. The waterproofing membranes 15 are then laid on top of the sub-floor 20 and are preferably secured thereto by an adhesive. The membranes 15 are also secured to the wall 11 about the edge of the floor by way of the receiver 10 on the interior of the wall and a finish floor 22 is then poured on top of the waterproofing membranes.

On the exterior of the wall 11 waterproofing membranes are secured to the wall at their upper edges by way of the lower receiver 10 inthe exterior surface 12 of the wall. Adhesive is then placed on'the wall below the lower receiver and the membrane is smoothed onto the wall. As shown in FIG. 1, the membrane 15, which is secured by the lower receiver 10, preferably extends downwardly over a portion of the footing 10. Sheets of the waterproofing membranes are then secured to the wall by their upper edges by way of the upper receiver 10 on the exterior surface of the wall. Adhesive is then applied to the wall below the upper receiver, and the sheets of membranes are then smoothed onto the wall and in overlapping relation with the membranes below the lower receiver. The

'earth or fill 18 is then graded to the level of the upper receiver 10.

-In building structure 16 moisture is prevented from passing from the earth or fill 18 and through the wall 11 by the waterproofing membranes 15 secured to exterior surface 12, and since the membranes 15 overlap the footing 17, seepage through the joint between the footing and wall is prevented whereby the dryness beneath the sub-floor is enhanced. Penetration of moisture above the sub-floor 20 is in any event prevented by the membrane 15 located between sub-floor 20 and finished floor 22, and moisture cannot rise between the edge of the floor and the wall since the edge of the membrane 15 is fastened securely to the interior surface of the wall by receiver 10.

Turning now to FIGS. 2, 3 and 4, a more detailed description will be given of receiver 10 which forms the present invention. The receiver 10 may be formed as an elongated member of various rigid materials but it is preferably made of extruded aluminum, and it may be provided in a standard length, say 20 foot lengths, or in a variety of lengths. In cross-section the elongated member has a concave shape. As viewed from the normally exterior side there is then provided a hollow central portion 24 which is formed by a pair of diverging leg sections 25 and 26. In the illustrated embodiment the leg section 25 forms an upper leg section and is substantially horizontal, andthe leg section 26 forms a lower leg section which slopes downwardly and outwardly. From the junction of the leg sections 25 and 26, a tongue element 27 is formed integrally with and projects from said leg sections. The tongue element 27 is contained within the hollow central portion 24 and is normally biased toward the lower leg section 26. The tongue element 27, which slopes downwardly to closely overlie the lower leg section, has an outer free end 28 which is preferably enlarged so as to provide a line of increased pressure on the membrane as will be described in more detail below.

The outer ends of the leg sections 25 and 26 terminate in upper and lower flanges 30 and 31, respectively, which define flat front faces 32 and 33. The flanges 30 and 31 are provided with rearwardly projecting lip portions 34 and 35, respectively on the opposite sides thereof as the flat front faces, the lip portions being turned back towards the central portion 24 so as to provide anchor means in the concrete wall.

The receiver 10 may be supplied with a sealing tape 36 (FIGS. 2 and 3) which is adhered to the flat front faces 32 and 33 and spanning the hollow central portion 24 which is thereby temporarily sealed or closed from the exterior.

In use the elongated members forming the receiver 10 are secured in end to end fashion to an interior surface 37 of an outer wall form 38 prior to pouring of the concrete for the wall 11. The elongated members may be secured by large steel staple members 40, which embrace the members and are driven into the wooden form 38. The front flat faces 32 and 33, with the sealing tape 36 fastened thereon are held firmly against the inside or interior surface 37 of the form. In the case of the upper receiver 10 shown in FIG. 1, the elongated members are fastened at grade level around the periphery of the building. When the concrete is poured it completely surrounds the rear or convex surface of the elongated members and flows around lip portions 34 and so that when the concrete hardens the receiver 10 is anchored within the wall and flat front faces 32 and 33 are substantially flush with the exterior surface 12 of the wall 11.

When the concrete wall 11 has set and the form 38 is removed, the projecting ends of the staple may be clipped, and in preparation for the application of the water-proofing membranes 15, the sealing tape 36 may be removed to expose the tongue element 27 within the hollow central portion 24 of the receiver (FIG. 3). The upper edge 15a of the membrane 15 is slid between the tongue 27, which may be held in a slightly elevated position and the lower leg section 26. The tongue 27 is then released and may be pressed tightly towards the lower leg section 26 to clamp the upper edge 15a of the membrane therebetween. As shown in FIG. 4, the enlarged free end 28 of the tongue has the affect of providing a line of increased gripping pressure along the upper edge 15a. After the upper edge 15a has been clamped to the wall by the receiver 10 and adhered to the wall below the'receiver 10, the hollow or concave central portion 24 of the receiver may be filled with a 7 plastic cement 41, to increase the sealing affect of the upper edge of the membrane and for receiver 10.

It is believed apparent from the above description that it is substantially impossible for the upper edge of the waterproofing to peel away or for the membrane to sag. Thus, an improved and more permanent waterproofing of the building structure is achieved. Since the upper receiver 10 is accurately located within the forms, the upper edge of the membrane is automatically situated at the grade level without further measurements being made during the application of the membrane, and the subsequent grading 18 may be quickly brought to the proper level which is defined by the straight horizontal line provided by the receiver 10.

Referring now to the alternative embodiment of the receiver shown in FIGS. 5 and 6, which receiver is denoted by the reference number 110, it may be noted that the receiver 110 includes a substantially horizontal protection of the upper leg section 125 and a downwardly sloping lower leg section 126, the leg sections being joined by a substantially vertical intermediate section 123. The sections 125, 123 and 126 form a concave or hollow central portion 124. A tongue element 127 is formed integrally with intermediatesection 123 between leg sections 125 and 126 and projections into the hollow central portion 124. The tongue element 127 includes an inner section 127a which slightly diverges from the lower leg section 126 The outer section 127b terminates in free end 128 which has a turned under lip 128a. With the configuration of tongue 127, a larger biasing force towards lower leg section 126 can be achieved, and the area of pressure on the membrane is achieved by the turned under lip 128a.

In the receiver 110 the upper and lower leg sections also terminate in upper and lower flanges 130 and 131 defining flat front faces 132 and 133. The receiver 110 is provided with a plurality of openings 144 through which nails may be driven to secure the receiver to the inside surface of wooden form 138. Anchor flanges 134 and 135 are formed integrally with flanges 130 and 131 and extend rearwardly therefore, and in addition flanges 145 are formed on the rear surfaces of upper and lower leg sections 125 and 126. To provide a good anchoring effect, the anchor flanges project at a variety of angles relative to front faces 132 and 133.

The outer section 127b of the tongue element 127 has a pair of spaced ribs 146, 146 running along the length thereof so as to provide a groove on the outer face of the tongue element 127 adjacent the outer free edge 128. Adjacent the front edge of the upper leg section 125 there is located a pair of longitudinally extending spaced ribs 148, 148 so as to provide a groove 149 on the lower surface of the upper leg section. Provided with the receiver 110 is an elongated sealer member 150 which is formed of a flexible material. The lower and upper longitudinal edges of the sealer member 150 when received'in grooves 147 and 149, respectively, hold the receiver 150 in a position to span the hollow central portion of the receiver. After the installation of the waterproofing sheets or members as previously described, the sealer member may be retained in place so as to make it unnecessary to apply the plastic cement as shown at 41 in the earlier described embodiment.

In certain installations it may become desirable to utilize a flashing in combination with the receiver 110, and the flashing 151 may be readily fastened to the receiver 110 as shown in FIG. 6. By providing a folded back flange 152 on the flashing, the flange 152 can be hooked under the tongue 127 with the lower edge of the flange being received by the turned under lip 128a. The flashing is thus held lightly in place and the lower part of the flashingoverlies the waterproofing material immediately below the receiver 110.

I claim: I j

1. A waterproofing receiver for holding an upper edge of a waterproofing membrane in sealed'relation against a side surface of a concrete wall, said receiver comprising an elongated member of constant cross- '6 section, said member having a concave shape in crosssection providing a hollow central portion, said hollow central portion being defined by diverging upper and lower leg sections, said leg sections terminating in outer ends located in a common vertical plane, a tongue element projecting from between said leg elements within said hollow central portion and being biased towards said lower leg for clamping said membrane therebetween, said upper leg section having a pair of longitudinal ribs thereon and defining a downwardly open groove between said ribs, said tongue having a pair of longitudinal ribs thereon and defining an upwardly open groove, and a flexible sealer member having an upper edge for reception in said downwardly open groove and a lower edge for reception in said upwardly open groove whereby said sealer member is held between said upper leg section and said tongue element to close off said hollow central portion.

2. A waterproofingreceiver for holding an upper edge of a waterproofing membrane in sealed relation against a side surface of a concrete wall, said receiver comprising an elongated member formed of extruded material and being of constant cross-section throughout its length, said member having a concave shape in cross-section providing a hollow central portion, said hollow central portion being defined by diverging upper and lower leg sections, said leg sections terminating in upper and lower flanges defining flat front faces in a common vertical plane, a tongue element formed integrally with said member within said hollow central portion and projecting from between said leg sections, said tongue element being biased towards said lower leg for clamping said membrane therebetween.

3. A waterproofing receiver as defined in claim 2, wherein said elongated member is formed of extruded aluminum.

4. A waterproofing receiver as defined in claim 2, and further comprising anchor flanges formed integrally with and projecting rearwardly from said upper and lower flanges, and anchor flanges formed integrally with and projecting rearwardly from said leg sections, said anchor flanges projecting at a variety of angles relative to said flat front faces. 

1. A waterproofing receiver for holding an upper edge of a waterproofing membrane in sealed relation against a side surface of a concrete wall, said receiver comprising an elongated member of constant cross-section, said member having a concave shape in cross-section providing a hollow central portion, said hollow central portion being defined by diverging upper and lower leg sections, said leg sections terminating in outer ends located in a common vertical plane, a tongue element projecting from between said leg elements within said hollow central portion and being biased towards said lower leg for clamping said membrane therebetween, said upper leg section having a pair of longitudinal ribs thereon and defining a downwardly open groove between said ribs, said tongue having a pair of longitudinal ribs thereon and defining an upwardly open groove, and a flexible sealer member having an upper edge for reception in said downwardly open groove and a lower edge for reception in said upwardly open groove whereby said sealer member is held between said upper leg section and said tongue element to close off said hollow central portion.
 2. A waterproofing receiver for holding an upper edge of a waterproofing membrane in sealed relation against a side surface of a concrete wall, said receiver comprising an elongated member formed of extruded material and being of constant cross-section throughout its length, said member having a concave shape in cross-section providing a hollow central portion, said hollow central portion being defined by diverging upper and lower leg sections, said leg sections terminating in upper and lower flanges defining flat front faces in a common vertical plane, a tongue element formed integrally with said member within said hollow central portion and projecting from between said leg sections, said tongue element being biased towards said lower leg for clamping said membrane therebetween.
 3. A waterproofing receiver as defined in claim 2, wherein said elongated member is formed of extruded aluminum.
 4. A waterproofing receiver as defined in claim 2, and further comprising anchor flanges formed integrally with and projecting rearwardly from said upper and lower flanges, and anchor flanges formed integrally with and projecting rearwardly from said leg sections, said anchor flanges projecting at a variety of angles relative to said flat front faces. 